Mercedes-Benz GLC-class X253 (2015-2019) steering column module control unit Wiring diagrams

BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLS GND PAS GND BLU/BLK WIRE BLU/YEL WIRE BM 1 BP 1 BRAKE VACUUM SENSOR BRN WIRE BRN/BLK WIRE CAN H L COMPUTER DATA LINES SYSTEM DZS HL H DZS HL L DZS HR H DZS HR L DZS VL H DZS VL L DZS VR H ELECTRIC PARKING BRAKE SWITCH ELECTRONIC STABILITY PROGRAM CONTROL UNIT ENGINE COMPARTMENT PREFUSE BOX ENGINE FUSE, RELAY MODULE FLEX RAY FRONT AXLE BRAKE PRESSURE SENSOR FRONT AXLE INTAKE BALL VALVE REAR AXLE INTAKE BALL VALVE FRONT AXLE SWITCHOVER VALVE FRONT PRESSURE SENSOR FUSE 1 FUSE 121 FUSE 200 FUSE 213 FUSE 329 GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/ORG WIRE GRN/RED WIRE GRN/YEL WIRE GRY/BLU WIRE HIGH PRESSURE, RETURN PUMP MOTOR HOT AT ALL TIMES HOT W/ ENGINE COMPARTMENT TERMINAL 15 RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED K LINE LEFT FRONT PRESSURE REGULATOR VALVE (HOLD) LEFT FRONT PRESSURE REGULATOR VALVE (RELEASE) LEFT FUSE, RELAY MODULE LEFT REAR PRESSURE REGULATOR VALVE (HOLD) LEFT REAR PRESSURE REGULATOR VALVE (RELEASE) MOT L+(-) 31 MOT L-(+) MOT R+(-) MOT R-(+) DZS VR L ORG/BLU WIRE PNK WIRE PNK/GRN WIRE REAR AXLE SWITCHOVER VALVE REAR PRESSURE SENSOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT A-PILLAR FUSE BOX RIGHT FRONT PRESSURE REGULATOR VALVE (HOLD) RIGHT FRONT PRESSURE REGULATOR VALVE (RELEASE) RIGHT REAR PRESSURE REGULATOR VALVE (HOLD) RIGHT REAR PRESSURE REGULATOR VALVE (RELEASE) SIG STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ANGLE SENSOR STOP LAMP SWITCH SW 1 SW 2 SW 3 SW 4 TAXIMETER (IF EQUIPPED) TRACTION SYSTEM HYDRAULIC UNIT TWO-WAY RADIO UB S UB V VAC GND VAC PUMP L BLS SUP VAC SUP VIO WIRE VIO/WHT WIRE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/GRY WIRE

ACCEPT/ TERMINATE PHONE CALL BUTTON BACK BUTTON BLK WIRE BLK/WHT WIRE BRN WIRE BUTTONS +, - FOR SETTING SPECIFIC FUNCTIONS, VOLUME CONTROL CAN A H CAN A L COMMUNICATIONS MODULE/STATIONARY HEATER ANTENNA COMPUTER DATA LINES SYSTEM EMERGENCY CALL SYSTEM ANTENNA FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT GPS ANTENNA GRN WIRE GRN/ORG WIRE GRY/BLU WIRE L OK L RETURN LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP MUTE FUNCTION BUTTON MUTE VCS NCA WIRE OK BUTTON PNK WIRE RED WIRE RED/WHT WIRE RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL FORWARD/ BACK BUTTON STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS SYSTEM SELECTION BUTTON TEL TOUCHPAD U MFL R UP/DOWN V MFL L VIO WIRE VOICE CONTROL SYSTEM OFF BUTTON W/ HERMES LTE WHT WIRE WHT/YEL WIRE YEL WIRE

ACCEPT/ TERMINATE PHONE CALL BUTTON BACK BUTTON BLK WIRE BLK/WHT WIRE BRN WIRE BUTTONS +, - FOR SETTING SPECIFIC FUNCTIONS, VOLUME CONTROL CAN A H CAN A L COMMUNICATIONS MODULE/STATIONARY HEATER ANTENNA COMPUTER DATA LINES SYSTEM EMERGENCY CALL SYSTEM ANTENNA FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT GPS ANTENNA GRN WIRE GRN/ORG WIRE GRY/BLU WIRE L OK L RETURN LEFT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP MUTE FUNCTION BUTTON MUTE VCS NCA WIRE OK BUTTON PNK WIRE RED WIRE RED/WHT WIRE RIGHT MULTI-FUNCTION STEERING WHEEL BUTTON GROUP SCROLL FORWARD/ BACK BUTTON STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS SYSTEM SELECTION BUTTON TEL TOUCHPAD U MFL R UP/DOWN V MFL L VIO WIRE VOICE CONTROL SYSTEM OFF BUTTON W/ HERMES LTE WHT WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLU/PNK WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER DRIVER SEAT BACKREST INCLINATION ADJUSTMENT MOTOR, HALL SENSOR DRIVER SEAT CONTROL UNIT DRIVER SEAT FORE/AFT ADJUSTMENT MOTOR, HALL SENSOR DRIVER SEAT HEAD RESTRAINT ADJUSTMENT MOTOR, HALL SENSOR FLEXRAY 1 BP FUSE 305 FUSE 327 FUSE 329 GRN WIRE GRY/BLK WIRE HK SL VL HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT BACKREST RELEASE/INCLINATION MICROSWITCH M+ (-) PNK FLEXRAY 1 BM WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RESUME FROM MEMORY SWITCH RIGHT A-PILLAR FUSE BOX SEATS SYSTEM SIG STEERING COLUMN MEMORY CIRCUIT STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/BLK WIRE WHT WIRE YEL WIRE YEL/GRN WIRE

BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT FLEXRAY 1 BM FLEXRAY 1 BP FUSE 210 GRN WIRE HEATING ELEMENT HEATING ELEMENT TEMPERATURE SENSOR HOT AT ALL TIMES LEFT FUSE, RELAY MODULE LH - NCA WIRE NTC- PNK WIRE RED/BLK WIRE STEERING COLUMN ADJUSTMENT, STEERING WHEEL HEATER SWITCH STEERING COLUMN MODULE CONTROL UNIT STEERING WHEEL ELECTRONICS STEERING WHEEL HEATER W/ ACTIVE LANE KEEPING ASSIST

BRN WIRE BRN/RED WIRE CAN B H CAN B L CAN H H CAN H L CAN HMI H CAN HMI L CAN PER H CAN PER L DISTRONIC ELECTRIC CONTROLLER UNIT (BEHIND CENTER OF FRONT GRILLE) DRIVETRAIN CONTROL UNIT ELECTRICAL POWER STEERING CONTROL UNIT ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT FLEXRAY 1 BM FLEXRAY 1 BP FLEXRAY 1 BP PNK FLEXRAY 1 BM WIRE FLEXRAY 2 BM FLEXRAY 2 BP FLEXRAY 3 BP PNK FLEXRAY 3 BM WIRE FLEXRAY 3 BP PNK FLEXRAY 3 BP WIRE FLEXRAY 4 BM FLEXRAY 4 BP FLEXRAY 4 BP PNK FLEXRAY 1 BP WIRE FLEXRAY 4 BP PNK FLEXRAY 4 BM WIRE FRONT LONG RANGE RADAR SENSOR GRN WIRE GRN/WHT WIRE LEFT FRONT BUMPER RADAR SENSOR PNK FLEXRAY 4 BM WIRE PNK WIRE PNK/WHT WIRE RADAR SENSOR CONTROL UNIT RIGHT FRONT BUMPER RADAR SENSOR STEERING COLUMN MODULE CONTROL UNIT VIO WIRE VIO/WHT WIRE W/ ACTIVE PARK ASSIST W/ AUTONOMOUS INTELLIGENT CRUISE CONTROL PLUS W/ AUTONOMOUS INTELLIGENT CRUISE CONTROL PLUS, DISTRONIC PLUS, AIRMATIC W/ DISTRONIC PLUS W/O DISTRONIC PLUS W/O AUTONOMOUS INTELLIGENT CRUISE CONTROL PLUS, DISTRONIC PLUS, AIRMATIC YEL WIRE YEL/WHT WIRE

BLK WIRE BRN WIRE BRN/RED WIRE CAN B H RBA-1 CAN B L COC COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ELECTRIC PARKING BRAKE SWITCH FLEXRAY 1 BM FLEXRAY 1 BP FOOTWELL ILLUMINATION SWITCH FRONT CENTER CONSOLE CUP HOLDER AMBIANCE ILLUMINATION FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FRONT SAM CONTROL UNIT (LEFT END OF DASH) FUSE 200 GRN WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE HEADLAMP FLASHER/ HIGH BEAM SWITCH HOT AT ALL TIMES LDS SGN 1 PNK WIRE LDS SGN 2 LDS SGN 3 LEFT FUSE, RELAY MODULE LEFT LUGGAGE COMPARTMENT REAR BACKREST RELEASE BUTTON PEDAL OPERATION MONITOR SWITCH PNK WIRE PNK/GRN WIRE PWR-1 RBA RBA-1 RED WIRE RIGHT LUGGAGE COMPARTMENT REAR BACKREST RELEASE BUTTON STEERING COLUMN MODULE CONTROL UNIT TWO-WAY RADIO SWITCH VEHICLE INTERIOR POWER OUTLET VIO WIRE W/ SMOKER'S PACKAGE W/O SMOKER'S PACKAGE YEL WIRE

AUTOMATIC DIMMING MIRROR BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER EL VL FLEXRAY 1 BP FUSE 329 GRN WIRE GRY WIRE GRY/WHT WIRE H NEIG SIG HORIZONTAL INCLINATION ADJUSTMENT ACTUATOR MOTOR HORIZONTAL INCLINATION ADJUSTMENT POTENTIOMETER HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED MIRROR HEATER NEIG HOR NEIG VER OUTSIDE MIRROR FOLD IN/ FOLD OUT ELECTRIC MIRROR PNK FLEXRAY 1 BM WIRE RED WIRE RED/BLU WIRE RESUME FROM MEMORY SWITCH RIGHT A-PILLAR FUSE BOX RIGHT BLIND SPOT ASSIST READINESS, WARNING INDICATOR RIGHT FRONT DOOR CONTROL UNIT RIGHT OUTSIDE MIRROR RIGHT OUTSIDE MIRROR AMBIENT LAMP RIGHT OUTSIDE MIRROR TURN SIGNAL LAMP SPG ABBL SPG F SPG G STEERING COLUMN MODULE CONTROL UNIT TA B (+) TA W (+) V NEIG SIG VERTICAL INCLINATION ADJUSTMENT ACTUATOR MOTOR VERTICAL INCLINATION ADJUSTMENT POTENTIOMETER VIO WIRE WHT WIRE YEL WIRE YEL/GRN WIRE YEL/WHT WIRE

BLK WIRE BLK/BLU WIRE BLK/VIO WIRE BLU/PNK WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM CRUISE CONTROL LEVER FLEXRAY 1 BP FRONT PASSENGER SEAT BACKREST INCLINATION ADJUSTMENT MOTOR, HALL SENSOR FRONT PASSENGER SEAT CONTROL UNIT FRONT PASSENGER SEAT FORE/AFT ADJUSTMENT MOTOR, HALL SENSOR FRONT PASSENGER SEAT HEAD RESTRAINT ADJUSTMENT MOTOR, HALL SENSOR FUSE 306 FUSE 328 FUSE 329 GRN WIRE GRY/BLK WIRE HK SL VL HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED M+ (-) PNK FLEXRAY 1 BM WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RESUME FROM MEMORY SWITCH RIGHT A-PILLAR FUSE BOX RIGHT BACKREST RELEASE/INCLINATION MICROSWITCH SEATS SYSTEM SIG STEERING COLUMN MODULE CONTROL UNIT VIO WIRE WHT WIRE YEL WIRE YEL/GRN WIRE

BLK/RED WIRE BLK/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM DRIVER SEAT CONTROL UNIT FLEXRAY BP FUSE 305 FUSE 329 FUSE 406 GRN WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT FRONT DOOR CONTROL UNIT LEFT FRONT SEAT ADJUSTMENT SWITCH GROUP M+ (-) MEMORY 2 SWITCH MEMORY 3 SWITCH MEMORY FUNCTION SWITCH MEMORY 1 SWITCH PNK FLEXRAY BM WIRE REAR FUSE, RELAY MODULE RED WIRE RIGHT A-PILLAR FUSE BOX SIG STEERING COLUMN ADJUSTMENT, STEERING WHEEL HEATER SWITCH STEERING COLUMN IN/OUT ADJUSTMENT MOTOR, HALL SENSOR STEERING COLUMN MODULE CONTROL UNIT STEERING COLUMN UP/DOWN ADJUSTMENT MOTOR, HALL SENSOR STEERING COLUMN) VIO WIRE VIO/BLK WIRE